此试题出现在
CMS专题
CMS专题
其他考试
Passage 2 They were, by far, the largest and most distant objects that scientists had ever detected: a strip of enormous cosmic clouds some 15 billion light years from earth. (1) But even more important, it was the farthest that scientists had been able to look into the past, for what they were seeing were the patterns and structures that existed 15 billion years ago. That was just about the moment that the universe was born. What the researchers found was at once both amazing and expected; the US National Aeronautics and Space Administration’s Cosmic Background Explorer satellite—Cobe—had discovered landmark evidence that the universe did in fact begin with the primeval explosion that has become known as the Big Bang (the theory that the universe originated in an explosion from a single mass of energy). (2) The existence of the giant clouds was virtually required for the Big Bang, first put forward in the 1920s, to maintain its reign as the dominant explanation of the cosmos. According the theory, the universe burst into being as a submicroscopic, unimaginable dense knot of pure energy that flew outward in all directions, emitting radiation as it went, condensing into particles and then into atoms of gas. Over billions of years, the gas was compressed by gravity into galaxies, stars, plants and eventually, even humans. Cobe is designed to see just the biggest structures, but astronomers would like to see much smaller hot spots as well, the seeds of local objects like clusters and superclusters of galaxies. They shouldn’t have long to wait. (3) Astrophysicists working with ground based detectors at the South Pole and balloon borne instruments are closing in on such structures, and may report their findings soon. (4) If the small hot spots look as expected, that will be a triumph for yet another scientific idea, a refinement of the Big Bang called the inflationary universe theory. Inflation says that very early on, the universe expanded in size by more than a trillion fold in much less than a second, propelled by a sort of antigravity. (5) Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary particle physics, and many astrophysicists have been convinced for the better part of a decade that it is true.
简述物流系统规划设计的主要流程阶段？
对于oracle数据库，设计用户表时，家庭住址字段最好采用下面的哪个数据类型进行存储（）
根据《关于财税库银横向联网电子退库、电子更正、电子免抵调业务有关事宜的通知》，以下属于电子更正通知书的基本要素的有（）。
CSK-1A试块直径50毫米有机玻璃圆孔可用于测试斜探头的折射角和分辨率。
学生票和儿童票的主要区别在于：学生票只准许买半价硬座客票，加快票和空调票，而儿童票可随同大人购买半价软座或者硬座客票，加快票，空调票。（部竞赛题）
我国卫生部标准规定，对kV的精度要求为不超过（）。
患者，男，69岁，吸烟。反复咳嗽、咳白色泡沫痰28年，气促10年，近2天因受凉后出现发热伴咳黄脓痰，气喘不能平卧。查体双肺语颤减弱，可闻及散在干、湿啰音，心界缩小，心率115次／分。下列治疗措施哪项不妥（）
陶渊明的《桃花源记》中哪个成语是形容因长期脱离现实，对社会状况特别是新鲜事物一无所知？
下列哪项不是续断的功效？（）
暂无相关推荐~